Wait, so is it for PREONLY? And what Matsolve does, solving a triangular system with both L and U available? The reason that I previously guess the count be two is that I think there is a back-substituiton and a forward-substitution involved in solving a linear system using factorization. If a pair of back-substitution and forward-substitution counts 1 MatSolve. Then I think we mean the same thing.
Thanks, Yan On Thu, Apr 7, 2011 at 10:08 AM, Jed Brown <jed at 59a2.org> wrote: > On Thu, Apr 7, 2011 at 16:06, Ryan Yan <vyan2000 at gmail.com> wrote: > >> Hi Jed, >> How is going? :-) >> >> PREONLY maybe also use two MatSolve? Or is there any magic I did not see. >> :-) >> > > Why do you say that? > > $ ./ex2 -pc_type lu -ksp_type preonly -log_summary |g '^MatSolve' > MatSolve 1 1.0 1.1921e-05 1.0 1.22e+03 1.0 0.0e+00 0.0e+00 > 0.0e+00 0 22 0 0 0 0 22 0 0 0 102 > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20110407/e6979140/attachment.htm>
